Thanks to QuasiQubit for finding the rocket command!
For those of you that wanna try this, simply host a game, enable cheats by typing this into console:
and then type this so you can shoot rockets by pressing "g"
bind g fire_rocket_projectile
This demo was recorded on 4/20/2011
As posted over @ whingepool: http://forums.whirlpool.net.au/forum-re ... &p=31#r610